URL with Candidate ID?

URL with Candidate ID?

I am trying to put a URL into an e-mail that links back to the candidate. 
Unfortunately the merge-field only allows to work with the Candidate Id, and the record ID is unavailable as a field. 
The URL however needs a record ID for the candidate. 

https://recruit.zoho.com/recruit/EntityInfo.do?module=Candidates&id=$(Candidate.CandidateID) does not link to the right information. 


Any idea how to do this so that it works? 


Thomas.